Liquid chromatography tandem mass spectrometry for detecting various pesticides in plant foods

Abstract

The invention discloses a liquid chromatography tandem mass spectrometry for detecting various pesticides in plant foods. The method comprises the following steps of parameter setting, test comparison, and qualitative and quantitative determination. After the above steps are adopted, the pretreatment process of pesticide residues in plant foods is simplified, the sample pretreatment conditions andinstrument parameters are optimized, and the experiment efficiency is improved; the interference of a sample matrix is well removed; and the test items are more, 52 kinds of common pesticides can bedetected, and the speed is high, so that the pesticide detection requirements of product export in China are met.

Description

technical field [0001] The invention belongs to the technical field of chromatographic detection and analysis, in particular to a liquid chromatography tandem mass spectrometry method for detecting various pesticides in plant foods Background technique [0002] my country is a large agricultural country. In order to ensure a good agricultural harvest, the application of agricultural inputs is indispensable in the production process. Pesticides play an irreplaceable role in the comprehensive control of crop diseases and insect pests. However, due to the long-term and large-scale use of pesticides, some properties are relatively Stable, accumulative, and chronically toxic chemical components to humans and animals accumulate continuously in animals, plants, and even humans, posing a greater threat to people's lives. [0003] Among the existing methods for the determination of pesticides in plant foods, the pretreatment of pesticide residues is relatively cumbersome, and the samp...

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Problems solved by technology

[0002] my country is a large agricultural country. In order to ensure a good agricultural harvest, the application of agricultural inputs is indispensable in the production process. Pesticides play an irreplaceable role in the comprehensive control of crop diseases and insect pests. However, due to the long-term and large-scale use of pesticides, some properties are relatively Stable, accumulative and chronically toxic chemical components to humans and animals, which accumulate continuously in animals, plants, and even humans, posing a greater threat to people's life safety

[0003] Among the existing methods for the determination of pesticides in plant foods, the pretreatment of pesticide residues is relatively cumbersome, and the sample pretreatment conditions and instrument parameters are complicated, which greatly affects the efficiency of the experiment; the existing methods cannot well exclude the sample matrix. interference, resulting in inaccurate experimental results

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